WO2003072873A1 - Lubricant for treating elastic fiber - Google Patents

Abstract

A lubricant for treating elastic fibers which comprises: at least 80 wt.% at least one base oil (A) having a viscosity at 25°C of 1 to 1,000 mm2/s and selected from the group consisting of silicone oils (A1) and hydrocarbon lubricating oils (A2); 0.05 to 2 wt.% C12-14 fatty acid/alkaline earth metal salt (B) having a volume-average particle diameter of 0.001 to 1 µm; and 0.01 to 8 wt.% at least one surfactant (C) having a solubility parameter (SP) of 8.0 to 10.5 and selected from the group consisting of anionic surfactants (C1) and nonionic surfactants (C2).

Description

 Specification

 Technology for elastic fiber treatment

 The present invention relates to an oil agent for treating elastic fibers. More specifically, it relates to an oil agent for obtaining an elastic fiber having good anti-sticking property. Background art

 Hitherto, a method has been proposed in which, as an anti-sticking agent, a solid metal stone is suspended in an oil agent to be attached to the fiber in the elastic fiber spinning process so as to exert a releasing effect (Japanese Patent Publication No. — Publication No. 2886, Japanese Patent Publication No. 40 — 5.557.

 However, although the above-mentioned method has the effect of preventing sticking, such solid components have poor dispersion stability such as aggregation and sedimentation in the oil over time, so that when the oil is used, uneven adhesion to the yarn occurs. This causes a problem that uniform anti-sticking properties cannot be exerted, and yarn breakage or the like occurs in the post-processing step due to fluctuations in tension or the like. Summary of the Invention

 Accordingly, an object of the present invention is to provide an oil treatment agent for an elastic fiber, which has excellent oil agent stability over a long period of time and has good anti-sticking properties between fibers when producing elastic fibers. Is to do.

 The present inventors have conducted intensive studies to obtain the above oil agent, and have found that using an oil agent containing a higher fatty acid metal salt whose volume average particle diameter is adjusted to a specific range and a surfactant having a specific solubility parameter. The inventors have found that the above problems can be solved, and have reached the present invention.

That is, the present invention has a viscosity of 1 to 1000 mm ² / _s at 25 ° C. and is selected from the group consisting of silicone oil (A 1) and hydrocarbon lubricating oil (A 2) even without least one of at least 8 0 mass base oil _{^{(a) 0/0, 0}} . 0 0 1~1 carbon atoms having a volume average particle diameter of mu _m 1. 2 to 2 4 of higher fatty al force Li earth metal salt (B) a 0.05 to 2 mass _^0/0, and has a 8.0 to 10.5 in solubility parameter (SP value), and Anion Surfactant (C 1) and nonionic surfactants (C2) at least one surfactant selected from the group consisting of: (C) 0.01 to 8% by mass of an oil agent for treating an elastic fiber; a step of spinning the oil agent for treating an elastic fiber. In 0.1 to 12 mass of elastic fiber. A method for treating an elastic fiber, characterized by giving / _{0 and} scouring as necessary; and an elastic fiber treated by the above-mentioned treatment method. Detailed Disclosure of the Invention

 Hereinafter, the present invention will be described in detail.

The base oil (A) of the present invention is selected from the group consisting of silicone oil (A1) and hydrocarbon lubricating oil (A2), and has a viscosity at 25 ° C. of 1 to 1000 mm ² / s. The lower limit of the viscosity of the base oil (A) at 25 ° C. is preferably 2 mm ² Zs, more preferably 3 mm ² / s. The upper limit is preferably 100 mm ² / s, more preferably 50 mm ² Zs.

 The viscosity can be measured as follows.

 Put the base oil (A) in a 20 g Ubbelohde viscometer and adjust the temperature of the base oil (A) to 25 ± 0.5 ° C in a constant temperature water bath. After 30 minutes, measure the viscosity by the Ubbelohde method.

The silicone oil (A1) of the present invention is not particularly limited. For example, the silicone oil (A1) may be substituted with a group selected from the group consisting of unsubstituted polydimethylsiloxane, an alkyl group having 2 to 20 carbon atoms and a phenyl group. Among polydimethylsiloxanes and the like, those having a viscosity at 25 ° C. of 1 to 1000 mm ² Zs can be mentioned.

Preferred among these are polydimethylsiloxanes having a viscosity at 25 ° C. of 2 to 100 mm ² Zs, more preferably 3 to 50 mm ² / s.

The hydrocarbon lubricating oil (A2) of the present invention is not particularly limited. For example, among mineral oils and refined oils thereof, hydrogenated oils, cracked oils and the like, the viscosity at 25 ° C of 1 to 1000 mm ² / s Things. The mineral oil is not particularly limited, and examples thereof include liquid paraffin. Among these, a viscosity at 25 ° C is. 2 to 100 mm ² Roh s, more preferably from mineral oil and its refined oil 3 to 50 mm ² Z _S.

 The base oil (A) may be used alone or as a mixture of two or more. Further, only (A1) or (A2) may be used, or a mixture of (A1) and (A2) may be used. Preferred is only (A2), and a mixture of (A1) and (A2), and more preferred is a mixture of (A1) and (A2).

 In the case of a mixture, the lower limit of the content ratio (mass ratio) of (A1) and (A2) is preferably 80/20, more preferably 70/30, and particularly preferably 65/35. The upper limit is preferably 5Z95, more preferably 10Z90, and particularly preferably 15/85. The content of the base oil (A) in the oil agent of the present invention is usually 80% by mass or more, preferably 82% by mass or more, and more preferably 85% by mass or more from the viewpoints of anti-sticking property and smoothness. . The upper limit is preferably 99.9% by mass, more preferably 99% by mass.

 The higher fatty acid of the higher fatty acid alkaline earth metal salt (B) contained in the elastic fiber treatment oil agent of the present invention is a higher fatty acid having 12 to 24 carbon atoms.

 The higher fatty acid is not particularly limited, but includes, for example, 12 to 24 carbon atoms of phosphoric acid, myristic acid, palmitic acid, stearic acid, isostearic acid, and behenic acid. Among these, preferred are palmitic acid, stearic acid, behenic acid and the like having 16 to 22 carbon atoms, and particularly preferred is stearic acid.

The alkaline earth metal salt is not particularly limited, and examples thereof include a barium salt, a calcium salt, and a magnesium salt, and a magnesium salt is preferable. The higher fatty acid alkaline earth metal salt (B) is not particularly restricted but includes, for example, magnesium dilaurate, calcium dilaurate, barium dilaurate; magnesium dimyristate, calcium dimyristate, and dimyristate. Barium acid salt; magnesium dipalmitate, calcium dipalmitate, barium dipalmitate; magnesium distearate, calcium distearate, barium distearate; magnesium distearate, magnesium diisostearate, calcium diisostearate, Barium diisostearate salt; Gibe Magnesium henate, calcium dibehenate, barium dibehenate; magnesium stearate palmitate, calcium stearate palmitate, parium stearate palmitate, and the like. Of these, preferred are alkaline earth metal salts of stearic acid, and particularly preferred is magnesium distearate. In addition, commercially available magnesium distearate and the like contain some unreacted magnesium hydroxide stearate as impurities, but this is not an issue.

 The higher fatty acid alkaline earth metal salt (B) may be used alone or as a mixture of two or more.

 The content of the higher fatty acid alkaline earth metal salt (B) in the oil agent of the present invention is usually 0.05 to 2% by mass, preferably the lower limit is 0.2% by mass and the upper limit is 1.8% by mass. It is. When the content is 0.05% by mass or more, the anti-sticking property is good. When the content is 2% by mass or less, the increase in viscosity of the entire oil agent over time is small, and there is no possibility that problems such as yarn breakage will occur even when spinning a fine yarn such as 11 to 22 decitex (dtx).

 The volume average particle diameter of the higher fatty acid alkaline earth metal salt (B) dispersed in the oil agent of the present invention is usually from 0.001 to 1 μπι from the viewpoint of oil agent stability and anti-sticking property. The lower limit of the volume average particle diameter of the alkaline earth metal salt (Β) is preferably 0.01 / zm, more preferably 0.1 μπι. The upper limit is preferably 0.5 μπι. If it is less than 0.01 μπι, the anti-sticking property is insufficient, and if it exceeds 1 μπι, the stability of the oil decreases.

 The volume average particle size is measured by a dynamic light scattering method. Specifically, the oil agent is placed in a cell with a length of 10 mm, and the volume average particle diameter is measured with a particle size measuring device.

 The surfactant (C) used in the present invention has a solubility parameter (hereinafter abbreviated as SP value) of 8.0 to 10.5. The lower limit of the solubility parameter of the surfactant (C) is preferably 8.1. The upper limit is preferably 10.2, and more preferably 9.9. If it is less than 8.0, the compatibility with the higher fatty acid alkaline earth metal salt (B) becomes poor, and the stability of the oil agent becomes insufficient. If it exceeds 10.5, the compatibility with the base oil (A) is poor, and the stability of the oil agent becomes insufficient.

The solubility parameter here refers to the cohesive energy density as shown below. And the square root of the ratio of molecular volumes.

[Solubility Parameter] = (ΔΕ / V) ^1/2

 Here, ΔΕ represents the cohesive energy density. V represents the molecular volume, and the value is calculated by Robert F. Fedors et al., For example, Polymer Engineering and Science (Polymerengineeringandscience) Vol. 14, 147- 1 54 (1974).

 The surfactant (C) used in the present invention is selected from the group consisting of anionic surfactant (C1) and nonionic surfactant (C2), and has a SP value in the above range. Inside.

 The anionic surfactant (ci) is not particularly limited. Among them, the sulfosuccinate anionic surfactant (C1-1) represented by the general formula (1) and the general formula (2) are preferable. Preferred are ether carboxylic acid anionic surfactants (C 1-2).

The sulfosuccinate ester-one surfactant (C1-1) used in the present invention is represented by the following general formula (1). ( _ι )

一般式 （1) において、 I ¹、 R²としては、 それぞれ独立に炭素数 1〜24 のアルキル基、 炭素数 2〜24のアルケニル基が挙げられる。

In the general formula (1), I ¹ and R ² each independently include an alkyl group having 1 to 24 carbon atoms and an alkenyl group having 2 to 24 carbon atoms.

 The alkyl group having 1 to 24 carbon atoms may be linear or branched. For example, methyl, ethyl, n- and i-propyl, butyl, pentyl, hexyl , Heptyl, octyl, nonyl, decyl, pentadecyl, dodecyl, tridecyl, tetradecyl, pentadecyl, hexadecyl, heptadecyl, octadecyl, nonadecyl, eicosyl, hexicosyl and the like. A docosyl group and a 2-ethyldecyl group.

The alkenyl group having 2 to 24 carbon atoms may be linear or branched, For example, n- and i-propenyl, hexenyl, heptenyl, octenyl, decenyl, pendenyl, dodecenyl, tetradecenyl, pentadecenyl, hexadecenyl, heptadecenyl, octadecenyl And a nonadecenyl group is, for example, 2-ethyldecenyl group.

Preferred among R ¹ and R ² is an alkyl group having 3 to 24 carbon atoms. These may be a mixture of two or more.

 In the general formula (1), A represents an alkylene group having 2 to 4 carbon atoms, and specific examples include an ethylene group, a propylene group, and a butylene group. Of these, preferred are an ethylene group and a propylene group. These may be a mixture of two or more. In the case of a mixture, it may be random or block.

 In the general formula (1), m, n and m + n are each independently an integer of 0 to 10, preferably 0 to 6, and more preferably an integer of 0 to 3. If it exceeds 10, the compatibility with the base oil (A) may be deteriorated.

 In the general formula (1), M represents a hydrogen atom, an alkali metal atom (lithium, potassium, sodium, or the like), or a substituted or unsubstituted ammonium (monoethanol ammonium, diethanol ammonium, triethanol / leammonium, etc.) Ethylhexyl ammonium). Of these, preferred are alkali metal atoms. These may be a mixture of two or more.

 The sulfosuccinate ester anionic surfactant (C1-1 1) represented by the general formula (1) is not particularly limited. Examples thereof include di (2-ethyl) sulfosuccinate hexyl sodium, and palmityl stearyl sulfosuccinate. Lithium, polyoxyethylene di-ethyl hexyl sodium sulfosuccinate (EO 6 mole adduct

(m = n = 3)) and the like.

 The ether carboxylate surfactant (C12) used in the present invention is represented by the following general formula (2).

R ³ — 0— (AO) p-CH ₂ COOM (2) In the general formula (2), specific examples and preferable examples of R ³ are the same as those of RR ² . In the general formula (2), A and M are the same as those in the general formula (1).

 In the general formula (2), p is an integer of 0 to 10, preferably 1 to 6. If it exceeds 10, the compatibility with the base oil may be deteriorated.

 The ether carboxylic acid anionic surfactant (C1-2) represented by the general formula (2) is not particularly limited, and examples thereof include octyl alcohol carboxymethyl sodium salt, decyl alcohol carboxymethyl sodium salt, and radilium. Sodium carboxymethylated sodium salt, dovanol 23 sodium carboxymethylated salt, sodium tridecanol carboxymethylated salt, octyl alcohol EO 3 mol adduct carboxymethylated sodium salt, lauryl alcohol EO 4 mol adduct ruboxymethylated sodium salt, iso Tridecyl alcohol EO 3 mol adduct carboxymethylated sodium salt, Dovanol 23 EO 3 mol adduct carboxymethylated sodium salt and tridecanol EO 5 mol adduct strength Rupoxymethylated sodium salt And the like.

 Specific examples of preferred ones include sodium octyl ether acetate, sodium decyl ether acetate, sodium lauryl ether acetate, sodium tridecyl ether acetate, sodium polyoxyethylene octyl ether acetate (E03 mole adduct), polyoxyethylene lauryl ether Sodium acetate (E03 mol adduct); sodium polyoxyethylene tridecyl ether acetate (EO 3 mol adduct); and the like.

 The nonionic surfactant (C2) is not particularly limited, but among them, the nonionic surfactant (C2-1) represented by the general formula (3) is preferable.

In the general formula (3), R ⁴ is an alkyl group having 1 to 24 carbon atoms, and specific examples and preferable examples are the same as the above-described alkyl groups of I ¹ and R ² .

In the general formula (3), as R ⁵ represents an alkyl group of 5 to several atoms (a methyl group, Echiru group, a propyl group, an isopropyl group, a butyl group, a pentyl group). Preferred among R ⁵ is an alkyl group having 1 to 3 carbon atoms. These are two or more May be used.

In the general formula (3), R ⁶ is a hydrogen atom or an alkyl group having 1 to 3 carbon atoms (eg, a methyl group, an ethyl group, a propyl group, and an isopropyl group). These may be a mixture of two or more.

In the general formula (3), A is the same as that in the general formula (1). (AO) _q in the general formula (3) is preferably a homopolymer group of oxyethylene and a block copolymer group of oxethylene and oxypropylene, and particularly preferably an alkaline earth metal salt. From the viewpoint of compatibility with oxyethylene. In the general formula (3), q is an integer of 1 to 10, preferably 1 to 6. If it exceeds 10, the compatibility with the base oil may be deteriorated.

 The nonionic surfactant (C2-1) represented by the general formula (3) is an EO and Z or PO adduct of a secondary alcohol having 3 to 33 carbon atoms. Examples of the concrete examples are not particularly limited. For example, secondary alcohol (13 carbon atoms) EO 3 mol adduct, secondary alcohol (13 carbon atoms) EO 5 mol adduct, secondary alcohol (13 carbon atoms) EO 7 mol addition Product, secondary alcohol (13 carbon atoms) E09 mole adduct, secondary alcohol (15 carbon atoms) EO 3 mole adduct, secondary alcohol (15 carbon atoms) EO 5 mole adduct, secondary alcohol (11 carbon atoms) EO 5 mol adduct, secondary alcohol (18 carbons) EO 5 mol adduct, secondary alcohol (24 carbons) EO 5 mol adduct, secondary alcohol (18 carbons) EO 3 mol PO 2 mol block adduct , Secondary alcohol (24 carbon atoms) EO5 mol PO 3 mol block adduct, Secondary alcohol (24 carbon atoms) E05 mol adduct, Emissions Daly alcohol (carbon number 18) EO 3 mol P O 2 mole adducts are exemplified up.

 Of the above surfactants (C), preferred are (C1-1), (C1-2) and (C2-1), and more preferred are (C1-1) of anionic surfactants. — 1) and (C 1-2).

These surfactants (C) may be used alone or as a mixture of two or more. The content of (C) in the oil agent of the present invention is not particularly limited, but the lower limit is preferably 0.01% by mass, more preferably 0.05% by mass, and particularly preferably 0.07% by mass. The upper limit is preferably 8% by mass, more preferably 5% by mass, and particularly preferably 4% by mass.

 The blending mass ratio of the higher fatty acid metal salt (B) having 12 to 24 carbon atoms and the surfactant (C) is not particularly limited, but from the viewpoint of stability of the oil agent, the upper limit is preferably 99/1, and 97 / 3 is more preferred, and 95/5 is particularly preferred. The lower limit is preferably 20/80, more preferably 50Z50, and more preferably 55Z45.

 The oil agent of the present invention may contain, if necessary, other components (D) in addition to (A), (B) and (C). Examples of (D) include anti-sticking components (D 1), antistatic components (D 2), and additives (D 3) other than (B). Further, a dissolution aid (E) described below may be contained.

 (D1) may be additionally added to such an extent that the performance of the oil agent for treating an elastic fiber of the present invention is not impaired, and by adding it, the anti-sticking effect can be increased.

 Examples of (D 1) include silicone (D 11) which is solid at room temperature, polyether-modified silicone (D 12), and a combination of two or more of these. Here, “solid at normal temperature” means a solid at 25 ° C.

 The silicone (D11) that is solid at room temperature (25 ° C) is not particularly limited, but examples thereof include polyorganosiloxane (silicone resin) containing a trifunctional siloxane unit or a tetrafunctional siloxane unit in the molecule. For example, a solid polymer having a three-dimensional structure with a high degree of branching [DT resin containing a bifunctional siloxane unit (D unit) and a trifunctional siloxane unit (T unit) as a main component, a monofunctional siloxane unit (M unit) and a tetrafunctional siloxane unit (Q unit) as main constituents, such as an MQ resin, and a polyorganosilsesquionsan consisting of only T units.

Preferred are a methylsilicone resin having a weight average molecular weight (abbreviated as Mw by gel permeation chromatography) of 1,000 to 100,000, and an amino-modified organopolysiloxane having a Mw of 1,000 to 100,000. It is a resin consisting of siloxane, and more preferably, has a Mw of 1,500 to 30,000. 0 is a methyl silicone resin.

The polyether-modified silicone (D12) is not particularly limited. For example, in the following general formula (4), at least one of R ⁷ , R ⁸ , R ⁹ and R ¹⁰ is a group having a polyoxyalkylene chain. Is mentioned. The remainder may be a methyl group, an alkynole group having 2 to 20 carbon atoms, a phenyl group or an alkoxy group having 1 to 5 carbon atoms.

上記ポリオキシアルキレン鎖含有基としては、 一般式

The polyoxyalkylene chain-containing group has a general formula

-A ¹ -O- (A ² -O) _s -R ¹¹

Wherein R ¹¹ represents a hydrogen atom or an alkyl group having 1 to 30 carbon atoms, A ¹ represents an alkylene group having 1 to 5 carbon atoms, and A ² represents an alkylene group having 1 to 4 carbon atoms. And may be the same or different, and may be block-like or random-like, and s represents an integer from 100 to 100).

 The blending amount of these (D1) in the oil agent of the present invention is preferably 4% by mass or less, more preferably 2% by mass or less. Further, it is preferably at most 200 parts by mass, more preferably at most 100 parts by mass, per 100 parts by mass of (B). '

 Examples of the antistatic component (D2) include an amphoteric surfactant (D21) and a cationic surfactant (D22).

 The amphoteric surfactant (D21) is not particularly restricted but includes, for example, betaine-type amphoteric surfactants, amino acid-type amphoteric surfactants and sulfonate-type amphoteric surfactants.

The betaine-type amphoteric surfactant is not particularly limited, but includes, for example, alkyl (1 to 30 carbon atoms) dimethyl betaine, alkyl (1 to 30 carbon atoms) amide alkyl (1 to 4 carbon atoms) dimethyl betaine, alkyl (carbon number 1-30) dihydroxyalkyl (1-30 carbon atoms) betaine, sulfobetaine-type amphoteric surfactant and the like. Of these, preferred are alkyldimethyl betaine, It is a kill amide alkyl dimethyl betaine.

 The amino acid type amphoteric surfactant is not particularly limited.

[Alkyl (1 to 30 carbon atoms) aminopropionic acid type, alkyl (1 to 30 carbon atoms) iminodipropionic acid type] amphoteric surfactant, glycine type [alkyl (1 to 30 carbon atoms) aminoacetic acid] Type etc.] amphoteric surfactants. Of these, preferred are alkylaminopropionic acid-type amphoteric surfactants and alkyliminodipropionic acid-type amphoteric surfactants.

 The sulfonate-type amphoteric surfactant (aminosulfonic acid-type amphoteric surfactant) is not particularly limited, and examples thereof include an alkyl (1 to 30 carbon atoms) taurine-type amphoteric surfactant.

 The cationic surfactant (D22) is not particularly limited, and examples thereof include a quaternary ammonium salt-type cationic surfactant and an amine salt-type cationic surfactant.

 The quaternary ammonium salt-type cationic surfactant is not particularly limited, and examples thereof include alkyl (1 to 30 carbon atoms) trimethylammonium salt, dialkyl (1 to 30 carbon atoms) dimethyl ammonium salt, Quaternary ammonium salts containing nitrogen rings (such as cetylpyridinium chloride), poly (additional moles 2 to 15) oxyalkylenes (2 to 4 carbon atoms) quaternary ammonium salts containing chains, alkyl (number of carbon atoms 1-30) amide alkyl (1-10 carbon atoms) dialkyl (1-4 carbon atoms) methylammonium salt (e.g., stearamidoethyl getyl methylammonium methosulfate) and the like. Preferred among these are the organic acid salts of alkyltrimethylammonium and especially the organic acid salts of dialkyldimethylammonium.

The amine salt-type cationic surfactant is not particularly limited. , Adipic acid, alkylsulfuric acid, etc.) can be used. For example, aliphatic tertiary amine having 3 to 90 carbon atoms, alicyclic (including nitrogen-containing heterocycle) tertiary amine having 3 to 90 carbon atoms, hydroxyalkyl having 3 to 90 carbon atoms An inorganic acid salt or an organic acid salt such as a tertiary amine having a group is exemplified. Of these, inorganic and organic acid salts of aliphatic amines are preferred. The content of the antistatic component (D2) in the oil agent of the present invention is preferably from 0 to 12% by mass, and more preferably from 0.1 to 10% by mass.

 As the additives (D3) other than these, the components usually used in oils for treating elastic fibers can be used, and examples thereof include antioxidants (hindered phenol, hindered amine, etc.), ultraviolet absorbers and the like. The compounding amount of (D3) in the oil agent of the present invention is preferably 5% by mass or less, more preferably 2% by mass or less.

 As the dissolution aid (E), for example, a monohydric aliphatic alcohol [methanol, ethanol mono-ole, propanol, butano-no, pentino-le-a-no-col, neopenti / real corno-le, 2-ethynole-hexyl-a-no-core, etc.] Divalent anorecone (ethylene glycol, propylene glycol, butylene glycol, etc.); aliphatic hydrocarbons such as hexane, pentane, etc .; ketones, such as acetone, methylethylketone, methylisobutylketone; toluene, xylene, etc. Aromatic hydrocarbons; highly polar solvents such as dimethylformamide and dimethylsulfoxide; and halogenated hydrocarbons such as chloroform and carbon tetrachloride.

 When the hydrocarbon lubricating oil (A2) is used, it can be used as it is as at least a part of the base oil (A). The dissolution aid (E) may be directly contained in the oil agent of the present invention, or a removable agent such as (E3) may be removed by stripping or the like.

 Examples of the method for producing the oil agent of the present invention include the following methods.

 Put (B), which is solid at room temperature, together with (C) into a tank equipped with a stirrer, and heat it to 100-150 ° C to completely dissolve it. A liquid mixture consisting of (B) and (C) After preparing (I) first, put it into (A), which has been previously adjusted to a temperature of 40 to 25 ° C, and convert (B) with a volume average particle diameter of 0.001 to 1.0 m to (B). Obtainable.

 (I) may be a homogeneous solution or a dispersion.

 The method for obtaining the liquid mixture (I) is not particularly limited, but a method in which the mixture containing (B) and (C) is heated to 80 to 160 ° C and melted is preferable.

(I) may consist solely of (B) and (C), or may be heated and melted in the form of a mixture containing at least a part of hydrocarbon lubricating oil (A2) or a solubilizing agent (E). May be. After adding (I) into (A), the particle size of (B) can be reduced by stirring under a stirring condition of a peripheral speed of 40 to 100 Om / min. Get better. The dispersion obtained by the above method can be used as it is as the oil agent for elastic fiber treatment of the present invention. However, if necessary, (A) or (D) may be further added to obtain the oil agent of the present invention. .

The viscosity of the oil agent of the present invention is preferably 2 to 100 mm ² Zs at 25 ° C. for uniform adhesion and prevention of roller wrapping.

 The viscosity is measured by the following method.

 Put the sample oil in a 20 g Ubbelohde viscometer, and adjust the temperature of the sample oil to 25 ± 0 · 5 ° C in a thermostatic water bath. After 30 minutes, the viscosity is measured by the Ubbelohde method.

 The oil agent can be applied in a non-water-containing state in general, but may be used as a water emulsion if necessary.

 The non-water-containing state can be used as it is (straight lubrication) or diluted with a diluent (organic solvent, low-viscosity mineral oil, etc.). The dilution ratio is not particularly limited, but the mass of the oil agent [total mass of non-volatile components] is usually 1 to 80% by mass, preferably 5 to 70% by mass based on the total mass of the diluted oil agent after dilution. % By mass.

 The low-viscosity mineral oil is not particularly limited, and examples thereof include liquid paraffin / refined spindle oil having a viscosity at 25 ° C of less than 1 mms.

 In the case of a water emulsion, it can be emulsified by a known method. For example, it can be obtained by mixing the present oil agent with an emulsifier as necessary and emulsifying in water. There is no particular need to add an emulsifier depending on the types of (A) and (C). For example, the above-mentioned anionic surfactant, nonionic surfactant and the like can be used.

 When an emulsifier other than the above-mentioned components is used, the amount of the emulsifier is preferably 0 to 50% based on the total mass of the oil agent (non-volatile content) after the emulsifier is combined. The emulsifier is not particularly limited. For example, an emulsifying tank equipped with a stirrer, a Ponole mill, a Gaulin homogenizer, a homodisper, a bead mill, or the like can be used.

Although the concentration of the emulsion is not particularly limited, the mass of the oil agent is preferably 0.01 to 30% by mass, more preferably, based on the total mass of the emulsified emulsion. 0.2 to 2 0 mass ^_0/0.

 The oil agent of the present invention is used in the spinning process of elastic fibers (for example, for 200 to 1,200 mZ), at any position after spinning and before the yarn is wound, such as roller lubrication and nozzle lubrication. Can be applied to the yarn. The temperature of the lubricating oil to be refueled is usually 10 to 80 ° (:, preferably 15 to 60 ° C.

 The oil agent of the present invention usually has a non-volatile content of from 0.:! To 12 with respect to the elastic fiber (the lower limit is preferably 0.5, more preferably 1. The upper limit is preferably 10 and more preferably 8.) % By mass.

 Examples of the elastic fiber to which the oil agent of the present invention can be applied include polyurethane elastic yarn, polyester elastic yarn, polyamide elastic yarn, and polycarbonate elastic yarn, and can be suitably used particularly for polyurethane elastic yarn.

 The fiber of the elastic fiber to which the oil agent of the present invention can be applied is not particularly limited, but is preferably from 10 to 250 dTX, more preferably from 11 to 1870 dTX.

 The elastic fiber treated with the oil agent of the present invention may be subjected to a post-processing step (for example, an air spun yarn step, a covering step, an air covering step, a knitting step, a warping step, a scouring step, a dyeing step and a finishing step). After that, it is finished to the final product. The elastic fiber is used in a blend with another synthetic fiber, for example, nylon or polyester fiber. Therefore, after the oil agent for treating elastic fibers of the present invention is applied, it is often washed and removed together with the oil agent for spinning other synthetic fibers in the refining step. In the refining process, aqueous refining or melt refining is performed.

 Final products include clothing [for example, pantyhose, socks, inner foundation (bras, girdle, bodysuits, etc.), outerwear (jackets, slacks, etc.), sportswear (swimwear, leotards, ski pants, etc.)] and industries It can be widely applied to materials (for example, disposable diapers, belts, etc.). BEST MODE FOR CARRYING OUT THE INVENTION

Hereinafter, the present invention will be described in more detail by way of examples, but the present invention is not limited thereto. Parts in the text and tables indicate parts by mass (active ingredient). Examples 1-4 and Comparative Examples 1-6

 Each component was blended under the blending recipe and production conditions shown in Table 1 to prepare the elastic fiber treating oil agents of the present invention and comparative examples. Example 1

 1 part of magnesium distearate, 0.1 part of sodium di-sulfosuccinate hexylester sodium salt and 10 parts of liquid paraffin are mixed to form a liquid mixture (I) at 110 to 120 ° C. In a reaction vessel equipped with a stirrer, put 28.9 parts of liquid paraffin whose temperature was controlled at 5 ° C, and with stirring, 80 to 120. The same (I) was gradually charged into this tank and stirred for 30 minutes. At this time, the temperature inside the tank was 5-22 ° C. Next, 60 parts of polydimethylsiloxane was added to prepare the oil agent of Example 1. Example 2

 The same procedure as in Example 1 was repeated except that 1 part of magnesium distearate, 0.1 part of sodium carboxymethylated isotridecyl alcohol EO 3 mol adduct and 10 parts of liquid paraffin were mixed to obtain a liquid mixture (I). The oil of Example 2 was prepared. Example 3

 The same procedure as in Example 1 was repeated except that 1 part of magnesium distearate, 0.5 part of a secondary alcohol (13 carbon atoms), 5 parts of EO adduct, and 10 parts of liquid paraffin were mixed to form a liquid mixture (I). The oil of Example 3 was prepared. Example 4

Example 4 Example 4 was repeated in the same manner as in Example 1 except that 1 part of calcium distearate, 0.1 part of di-2-sulfylhexylsulfosuccinate sternal sodium salt and 10 parts of liquid paraffin were mixed to obtain a liquid mixture (I). Was prepared. Comparative Example 1 An oil agent of Comparative Example 1 was prepared in the same manner as in Example 1, except that 1 part of magnesium distearate and 10 parts of liquid paraffin were mixed to obtain a liquid mixture (I). Comparative Example 2

 A comparative example was prepared in the same manner as in Example 1 except that 1 part of magnesium distearate, 0.1 part of perfluorooctylsulfonate sodium salt and 10 parts of liquid paraffin were mixed to form a liquid mixture (I). Two oil solutions were prepared. The SP value of perfluorooctylsulfonate sodium salt of this comparative example was 7.2, which was too low. Comparative Example 3

 The procedure of Example 1 was repeated except that 1 part of magnesium distearate, 0.1 part of EO adduct of lauric acid monoethanolamide and 0.1 part of liquid paraffin and 10 parts of liquid paraffin were mixed to obtain a liquid mixture (I). An oil agent of Comparative Example 3 was prepared. In addition, the SP value of the diethanolamine monoethanolamide EO 2 mol adduct of this comparative example is 10.7, which is too high. Comparative Example 4

 The oil of Comparative Example 4 was prepared in the same manner as in Example 1 except that 1 part of magnesium distearate was not used. Comparative Example 5

 An oil agent of Comparative Example 5 was prepared in the same manner as in Example 1 except that 1 part of potassium stearate was used instead of magnesium distearate. Comparative Example 6

1 part of magnesium distearate, 0.1 part of di-sulfosuccinate di-ethylhexyl ester sodium salt, 38.9 parts of liquid paraffin and 60 parts of dimethylpolysiloxane are mixed together from the beginning. It was heated and melted at 120 ° C. Then, the mixture was cooled to 20 ° C at a rate of 10 ° C / hour while stirring, and the oil of Comparative Example 6 was added. In the dry spinning method of the prepared <polyurethane elastic fiber, the oil agent shown in Table 1 was applied by roller lubrication so that the amount of the oil agent adhered to 6% by mass based on the mass of the elastic fiber, and wound up in a cheese at 60 OmZ. A 4 OD polyurethane fiber was obtained. Further, a daily stability test and an agglutination test of the oil agent were performed. Table 1 shows the performance evaluation results. Table 1 shows the volume average particle diameter of the component (B) in the oil agent. Table 1 Comparative example

 1 2 3 4 1 2 3 4 5 6

 <Formulation formula>

 Dimethyl polysiloxane 60 parts 60 60 60 60 60 60 60 60 60 Liquid raffin 38.9 38.9 38.5 38.9 39.0 38.9 38.9 39.9 38.9 38.9 Magnesium distearate 1 1 1 1 1 1 1 Calcium distearate 1

 Potassium stearate 1 Surfactant-1 (SP = 9.6) 0.1 0.1 0.1 0.1 0.1 Surfactant 'ugly-2' (SP = 8.1) 0.1

 Surfactant-3 (SP = 9.7) 0.5

 Surfactant "4 (SP = 7.2) 0.1

 Surfactant-5 (SP = 10.7) 0.1

 Cough 14 ability>

 Medullary mean particle size (β τη) 0.3 0.3 0.4 0.8 2.1 2.0 2.0 0.3 2.0

 -5 〇 〇 〇 〇 X X X o 〇 X

 25 ° C 〇 〇 〇 〇 X X X X Stability o o

50 ° C 〇 〇 〇 〇 XXX 〇 o X Adhesive 〇 〇 〇 〇 〇 〇 〇 XX 〇 The method for measuring the volume average particle diameter of the component (B) in the oils obtained in the Examples and Comparative Examples, the daily stability test of the oils, and the method of testing the adhesiveness of the yarns to which the oils were applied are as follows. Oh.

<Method of measuring volume average particle size>

 The oil was placed in a 1 Omm long cell and measured by dynamic light scattering using ELS-800 manufactured by Otsuka Electronics Co., Ltd. Daily stability test of oils>

 100 g of the prepared oil was placed in a 145 m 1 glass bottle, and allowed to stand in a thermostat at 15 ° C, 25 ° C and 50 ° C for 30 seconds each, and the appearance of the oil was visually observed. It was compared with the appearance of the oil agent immediately after preparation and judged according to the following criteria.

One criterion one

 〇: No change

 X: Separation or sediment occurs

<Glutability test>

 Using a fiber that has been aged for 1 week at 25 at 25 ° C, the cheese wound in the spinning process is passed through a drawer winding device with a variable magnification (the ratio between the drawing speed and the winding speed can be changed). When the yarn was sent out at, the lowest speed magnification at which the yarn could be wound up without being wound up by agglutination was determined, and judged based on the following criteria. One criterion one

 〇: Speed multiple is 50 to 65

 X: Speed multiple is 66 or more. Each component in Table 1 is as follows.

• Polydimethylsiloxane: KF 96-10 CS (viscosity: 10 mm ² / s (25 ° C)) (Shin-Etsu Chemical Co., Ltd.) • Liquid paraffin: Flow pan 60 S (viscosity: 15 mm ² Z s (25 ° C)) (manufactured by Sanko Chemical Co., Ltd.)

 • Surfactant 1: Di-sulfosuccinate di-2-ethylhexyl ester sodium salt

 • Surfactant-2: Isotridecyl alcohol E O 3 mol adduct carboxymethylated sodium salt

 • Surfactant-3: Secondary alcohol (13 carbon atoms) E05 mol adduct • Surfactant-4: Perfluorooctyl sulfonate sodium salt

 • Surfactant-1 5: Monoethanolamide laurate 2 mol adduct As shown in Table 1, a surfactant having a SP within the range specified in the present invention was used, and a specific volume average particle diameter was used. It can be seen that the oils having Examples (Examples 1 to 4) are excellent in both the chronological stability and the anti-sticking property of the oils. In contrast, none of Comparative Examples 1 to 6 satisfy all the performance items. Industrial applicability

 In the case of manufacturing using the oil agent for treating elastic fibers of the present invention, since the oil agent has both excellent aging stability and anti-sticking property between yarns, the elastic fiber can be used for a long time in the post-processing step from spinning. It can be manufactured while maintaining stable operability.

Claims

The scope of the claims 1. At 25 ° C .: 1 to: at least one base oil (A) having a viscosity of L 000 mm ² Z s and at least one base oil selected from the group consisting of silicone oil (A1) and hydrocarbon lubricating oil (A2) 80 mass _^0/0,  0.05 to 2% by mass of a higher fatty acid alkaline earth metal salt (B) having a volume average particle diameter of 0.001 to 1 m and having 12 to 24 carbon atoms, and  8. It has a solubility parameter (SP value) of 0 to 10.5 and at least one surfactant selected from the group consisting of Ayuon surfactant (C1) and nonionic surfactant (C2) Agent (C) 0.01 to 8% by mass An oil agent for treating an elastic fiber, comprising: 2. Surfactant (C) Sulfosuccinate ester anion surfactant (C1-1) represented by the following general formula (1) and ether carbonate anion surfactant represented by the following general formula (2) 2. The surfactant according to claim 1, which is at least one surfactant selected from the group consisting of (C1-2) and a nonionic surfactant (C2-1) represented by the following general formula (3). Oil agent for elastic fiber treatment. _{^{R 1 - 0- (AO) s}} CCH 2  (1) R ² ― 0— (AO) irOCCH-S0 ₃ M R ³ — O— (AO) p-CH ₂ COOM (2)

(Wherein, I ^1, R ²及Pi R ³ each independently represent a group selected from the group consisting of alkenyl alkyl Moto及beauty carbons 2 to 24 1 to 24 carbon atoms; R ⁴ is represents an alkyl group having 1 to 24 carbon atoms; R ⁵ represents an alkyl group of 1 to 5 carbon atoms; R ⁶ Represents a hydrogen atom or an alkyl group having 1 to 3 carbon atoms; A represents an alkylene group having 2 to 4 carbon atoms; m represents an integer of 0 to 10; n represents an integer of 0 to 10; m + n is an integer of 0 to 10; p is an integer of 0 to 10; q is an integer of 1 to 10; M is a hydrogen atom, an alkali metal atom, or a substituted or unsubstituted ammonium. Represents) 3. The oil agent for treating an elastic fiber according to claim 1, wherein the mass ratio of the alkaline earth metal salt (B) to the surfactant (C) is 99/1 to 20/80. 4. The oil agent for treating an elastic fiber according to claim 1, wherein the alkaline earth metal salt (B) is magnesium distearate. 5. A silicone oil (A1), which is an unsubstituted polydimethylsiloxane, and a polydimethylsiloxane substituted with Z or a group selected from the group consisting of an alkyl group and a phenyl group having 2 to 20 carbon atoms. 2. The oil agent for treating elastic fibers according to 2. 6. The elastic fiber treating oil agent according to claim 1, which is a hydrocarbon lubricating oil (A2), a mineral oil, or a refined oil, a hydrogenated oil, or a cracked oil thereof. 7. The oil agent for treating an elastic fiber according to claim 1, wherein the volume average particle diameter of the alkaline earth metal salt (B) is 0.01 to 0.5 / zm. ' 8. A method for treating an elastic fiber, comprising applying the oil agent for treating an elastic fiber according to claim 1 or 2 to the elastic fiber in a spinning step in an amount of 0.1 to 12% by mass and scouring as necessary. 9. An elastic fiber treated by the treatment method according to claim 8.